Knowing the state of fish stocks is the basis for determining TACs (Total Allowable Catches). However, there are other management measures that also require scientific advice.
https://abs.twimg.com/emoji/v2/... draggable="false" alt="📝" title="Memo" aria-label="Emoji: Memo"> Today we are talking about the Landing Obligation (LO)
https://abs.twimg.com/emoji/v2/... draggable="false" alt="🧵" title="Thread" aria-label="Emoji: Thread">https://abs.twimg.com/emoji/v2/... draggable="false" alt="⬇️" title="Pfeil nach unten" aria-label="Emoji: Pfeil nach unten">
https://abs.twimg.com/emoji/v2/... draggable="false" alt="📷" title="Kamera" aria-label="Emoji: Kamera"> @EvaUve

In the latest reform of the Common Fisheries Policy (CFP, 2013), the obligation to land (and therefore the https://abs.twimg.com/emoji/v2/... draggable="false" alt="⛔" title="Nicht betreten" aria-label="Emoji: Nicht betreten"> prohibition to discard) was established any species subject to:
https://abs.twimg.com/emoji/v2/... draggable="false" alt="✅" title="Fettes weißes Häkchen" aria-label="Emoji: Fettes weißes Häkchen"> TAC and quotas (Atlantic)
https://abs.twimg.com/emoji/v2/... draggable="false" alt="✅" title="Fettes weißes Häkchen" aria-label="Emoji: Fettes weißes Häkchen"> Minimum Conservation Reference Sizes (MCRS) (Mediterranean)

With the aim of gradually reducing discards (catches that were previously returned to the sea for different reasons) the LO was gradually implemented in the different fisheries, being fully in force since January 1, 2019
https://abs.twimg.com/emoji/v2/... draggable="false" alt="📷" title="Kamera" aria-label="Emoji: Kamera"> @xulioval

There are some exemptions to LO:
https://abs.twimg.com/emoji/v2/... draggable="false" alt="➡️" title="Pfeil nach rechts" aria-label="Emoji: Pfeil nach rechts">Prohibited species
https://abs.twimg.com/emoji/v2/... draggable="false" alt="➡️" title="Pfeil nach rechts" aria-label="Emoji: Pfeil nach rechts">Species with a high survival rate (e.g. rays, Norway lobster)
https://abs.twimg.com/emoji/v2/... draggable="false" alt="➡️" title="Pfeil nach rechts" aria-label="Emoji: Pfeil nach rechts"> De minimis exemptions *
https://abs.twimg.com/emoji/v2/... draggable="false" alt="➡️" title="Pfeil nach rechts" aria-label="Emoji: Pfeil nach rechts">Fish with damage caused by predators

* The European Commission may grant "de minimis exemptions" to certain metiers when it is scientifically proven that it is not easy to improve the selectivity of said metier https://abs.twimg.com/emoji/v2/... draggable="false" alt="➡️" title="Pfeil nach rechts" aria-label="Emoji: Pfeil nach rechts"> they can exceptionally discard% of the species

The catches returned to the sea based on some exemption must be correctly recorded, which translates into an increase in the categories of the catch.
Before, only discarded species (DIS) and landed species (LAN) were discussed

Now, in addition, there are:
https://abs.twimg.com/emoji/v2/... draggable="false" alt="➡️" title="Pfeil nach rechts" aria-label="Emoji: Pfeil nach rechts">BMS (below minimum size): is the fraction of the catch that, being below the legal minimum landing size, must necessarily be landed
https://abs.twimg.com/emoji/v2/... draggable="false" alt="➡️" title="Pfeil nach rechts" aria-label="Emoji: Pfeil nach rechts">The category of "minimis"